Liquid Composition Input Box

The liquid composition panel serves two functions. It's used to

Input or alter the bulk composition of the system, and

to Output the normalized liquid composition at any stage of the calculation.

When the user types in a new system bulk composition, she enters the data in the text entry box. These are the regions on the panel with the white background. The units are grams, and the input composition need not sum to 100 grams. Each text entry box can only hold five characters. Regardless of the precision on entry, MELTS maintains an internal precision of +/- 0.01 grams.

Once the calculation begins, either by choosing Find Liquidus or Execute/Halt from the Commands menu, the displayed composition will be normalized to 100 grams (i.e. wt % oxides).